Overview
The FAN7842MX, produced by onsemi, is a monolithic half-bridge gate-drive IC designed to drive MOSFETs and IGBTs that operate up to +200V. This IC utilizes onsemi’s high-voltage process and incorporates a common-mode noise canceling technique, ensuring stable operation of the high-side driver even under high-dv/dt noise conditions. The device features an advanced level-shift circuit that allows high-side gate driver operation up to VS=-9.8 V (typ.) for VBS=15V. The input logic level is compatible with standard TTL series logic gates, and UVLO circuits for both channels prevent malfunction when VCC and VBS are lower than the specified threshold voltage.
Key Specifications
| Configuration | Half Bridge |
|---|---|
| No of Outputs | Dual |
| Peak Output Current | 350mA (source), 650mA (sink) |
| Supply Voltage-Max | 20V |
| Package Style | SOP-8 |
| Mounting Method | Surface Mount |
| Rise Time | 60ns |
| Fall Time | 30ns |
| Turn On Propagation Delay | 170ns (typ.) |
| Turn Off Propagation Delay | 200ns (typ.) |
| Delay Matching | < 50ns |
Key Features
- High and low side gate drive capability for MOSFETs and IGBTs up to +200V.
- Common-mode dv/dt noise canceling circuit for stable operation under high noise conditions.
- Advanced level-shift circuit allowing high-side gate driver operation up to VS=-9.8 V (typ.) for VBS=15V.
- TTL-compatible input logic threshold levels.
- UVLO functions for both channels to prevent malfunction when VCC and VBS are below the specified threshold voltage.
- Matched propagation delay below 50ns.
- Output in-phase with input signal.
- Extended allowable negative VS swing to -9V for signal propagation at VCC=VBS=15V.
Applications
- Electric bikes and other electric vehicles.
- Industrial power systems and motor drives.
- Power supplies and DC-DC converters.
- Any application requiring high-voltage MOSFET or IGBT gate driving.
Q & A
- What is the maximum supply voltage for the FAN7842MX?
The maximum supply voltage for the FAN7842MX is 20V.
- What is the peak output current of the FAN7842MX?
The peak output current is 350mA (source) and 650mA (sink).
- What package style does the FAN7842MX come in?
The FAN7842MX comes in an SOP-8 package.
- Is the input logic level of the FAN7842MX compatible with TTL logic?
Yes, the input logic level is compatible with standard TTL series logic gates.
- What is the purpose of the UVLO circuits in the FAN7842MX?
The UVLO circuits prevent malfunction when VCC and VBS are lower than the specified threshold voltage.
- What is the typical turn-on and turn-off propagation delay of the FAN7842MX?
The typical turn-on propagation delay is 170ns, and the typical turn-off propagation delay is 200ns.
- Can the FAN7842MX operate with high-side gate drivers at negative voltages?
Yes, it can operate with high-side gate drivers up to VS=-9.8 V (typ.) for VBS=15V.
- What is the common-mode noise canceling feature of the FAN7842MX?
The device features a common-mode dv/dt noise canceling circuit for stable operation under high noise conditions.
- What are some typical applications of the FAN7842MX?
Typical applications include electric bikes, industrial power systems, and any application requiring high-voltage MOSFET or IGBT gate driving.
- How many outputs does the FAN7842MX have?
The FAN7842MX has dual outputs.
